CVE-2026-52950

drm/xe/dma-buf: fix UAF with retry loop

State: Published
Severity: 7.8 High
Published: Jun 24, 2026
Updated: Oct 19, 2026
Reserved: Jun 9, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/dma-buf: fix UAF with retry loop

Retry doesn't work here, since bo will be freed on error, leading to UAF. However, now that we do the alloc & init before the attach, we can now combine this as one unit and have the init do the alloc for us. This should make the retry safe.

Reported by Sashiko.

v2: Fix up the error unwind (CI)

(cherry picked from commit 479669418253e0f27f8cf5db01a731352ea592e7)

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	7.0 High	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	redhat-SADP

Weaknesses

CWE-825 Expired Pointer Dereference

Affected Products

Product	Versions
LinuxLinux	eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 to before 39fdac6be02eb7c3460518c1c4085f75f935c4ceAffected eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 to before 827062952ed9bdf4220466c1f05ce452d04bdedfAffected eb289a5f6cc668853f9b2ea6aca04afe58ed11c7 to before 155a372a1cc50fa93387c5d3cdfd614a61e1afd1Affected
LinuxLinux	6.18Affected before 6.18Not affected 6.18.33 through 6.18.Not affected 7.0.10 through 7.0.Not affected 7.1 and laterNot affected

References

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